package net.ningbo;

/**
 * @Author 宁铂
 * @Date 2021/7/6 20:14
 * @Version 1.0
 */
public class PassObject {

    static void f(Letter y){
        y.c = 'z';
    }

    public static void main(String[] args) {
        Letter x = new Letter();
        x.c = 'a';
        System.out.println("1: x.c: "+x.c);

        f(x);
        System.out.println("2: x.c: "+x.c);
    }
}

class Letter{
    char c;
}
